A salt which gives CO2 with hot H2SO4and...

A salt which gives `CO_2` with hot `H_2SO_4`and also decolourises acidified `KMnO_4` on warming is :

A

`HCO_3^-`

B

`CO_3^(2-)`

C

Oxalate

D

Acetate

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The correct Answer is:

C

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